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    SubjectRe: [PATCH v2 1/6] TTY: serial, remove BTM from wait_until_sent
    On Thu, Jul 14, 2011 at 02:35:10PM +0200, Jiri Slaby wrote:
    > This should also fix the issue Andreas is seeing (BTM in comparison to
    > BKL doesn't have any hidden functionality like unlocking during
    > sleeping).

    I tested the patch series and it does not appear to make a difference
    for the internal (16550A) serial ports on my system. Also, I am still
    unclear on why it freezes the X display during the timeout period.

    The other serial port device I have at hand is a FTDI USB->Dual UART
    which appears to not have a timeout at all, but then that shows no
    difference whether your patches are applied or not. I don't remember if
    it was always that way, at least 2.6.39 also acts identically.

    Andreas Bombe

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